Noble gases are adsorbed by

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(D) Noble gases are adsorbed by activated coconut charcoal. The adsorption of different noble gases occurs at different temperatures,which allows coco

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Activated coconut charcoal

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(D) Noble gases are adsorbed by activated coconut charcoal. The adsorption of different noble gases occurs at different temperatures,which allows coconut charcoal to be used for the separation of these gases. Helium is not significantly adsorbed by charcoal because it is a very difficult gas to liquefy due to its extremely weak van der Waals forces.

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